We have a 2011 Yukon slt with roughly 110k kms on the clock which came with 17" rims. It drove nice and straight and didn't pull into the low spots of the road until I put some 22" escalade rims on. Also over bumps the steering wheel started shaking back and fourth. We had lower ball joints changed at the dealership and everything else they say is tight. It helped a little bit but the problems are still there to the point where my wife and I cannot stand to drive it with the 22's on and have put the 17's back on. I was wondering if my steering rack could have some slop in it from over the years. I know you loose a little ride comfort with 22's but I had them on my 2011 1500 4x4 before we got the Yukon and the truck drove much better then the Yukon with them.